JavaScript must be enabled in order to use this site.Please enable JavaScript in your browser and refresh the page. D13.C. Russian Codes - Steel Design Per SP 16.13330.2011 STAAD.Pro is capable of performing steel design based on the Russian code Сп 16.13330.2011 стальные конструкции (SP 16.13330.2011 Steel Structures). Note: This code supersedes SNiP II-23-81*. D13.C.1 General D13.C.2 Member Capacities D13.C.3 Built-in Russian Steel Section Library D13.C.4 Design Parameters D13.C.5 Member Selection and Code Check Parent topic: D13. Russian Codes Related concepts D13.B. Russian Codes - Steel Design Per SNiP 2.23-81* (Edition 1990)